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Finding the Fourth Proportional to 16,402,978.40, 24,604,467.60 and 15,656,482.40

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Solution

The fourth proportional to 16,402,978.40, 24,604,467.60 and 15,656,482.40 is: 23,484,723.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,402,978.40 : 24,604,467.60 = 15,656,482.40 : x
  2. Step 2: Convert to fraction form
    16,402,978.40/24,604,467.60 = 15,656,482.40/x
  3. Step 3: Cross multiply
    16,402,978.40x = 24,604,467.60 × 15,656,482.40
  4. Step 4: Simplify right side
    16,402,978.40x = 385,219,413,940,770.25
  5. Step 5: Solve for x
    x = 385,219,413,940,770.25/16,402,978.40
  6. Step 6: Final answer
    x = 23,484,723.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.